I highly recommend Harley Watsons talk (_unlobito) about ITSO and footnotes on Oyster card. https://lobi.to/talks/papertickets/ https://lobi.to/talks/paperticke

I highly recommend Harley Watsons talk (_unlobito) about ITSO and footnotes on Oyster card. https://lobi.to/talks/papertickets/ https://lobi.to/talks/papertickets/ that talk is also referenced in this article, a truly wonderful presenter.